WO2013076704A1 - Soupape de surpression pour contenants adaptés à un chargement pneumatique de produits solides lâches, en particulier des silos - Google Patents
Soupape de surpression pour contenants adaptés à un chargement pneumatique de produits solides lâches, en particulier des silos Download PDFInfo
- Publication number
- WO2013076704A1 WO2013076704A1 PCT/IB2012/056690 IB2012056690W WO2013076704A1 WO 2013076704 A1 WO2013076704 A1 WO 2013076704A1 IB 2012056690 W IB2012056690 W IB 2012056690W WO 2013076704 A1 WO2013076704 A1 WO 2013076704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- duct
- valve
- elastomer
- previous
- suited
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
- B65G53/10—Gas pressure systems operating without fluidisation of the materials with pneumatic injection of the materials by the propelling gas
- B65G53/12—Gas pressure systems operating without fluidisation of the materials with pneumatic injection of the materials by the propelling gas the gas flow acting directly on the materials in a reservoir
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/54—Flexible pipes or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/60—Devices for separating the materials from propellant gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/788—Having expansible port
Definitions
- the present invention is relative to a pressure relief valve for containers suited for the pneumatic loading of loose solid products.
- the present invention finds advantageous, but not exclusive, application in silos, to which explicit reference will be made in the description below without because of this loosing in generality.
- Pressure relief valves are well known in containers under pressure, such as -for example silos, which are provided with a metal discharge duct, which can be connected to a further pipe for conveying powders to a confined and protected area.
- the solution according to the present invention provides an industrialized valve body made of plastic material, which comprises, though, a powder discharge duct made of a flexible material, for example an elastomer, in particular a polymer that is suited to be elastically deformed.
- the powder discharge duct is constrained at its ends, so that the increase in pressure, due to the loading of the silo, causes it to be squashed and deformed, while, during the opening of the discharge, it resumes its original shape.
- This original shape squashing/resuming movement allows the powder discharge duct to vibrate, thus eliminating possible scaling.
- the pulsed action which acts on the exhaust pipe, before the opening of the valve according to the invention, allows the almost total removal of the material present and the detachment from the walls of those that might be encrusted.
- the activation of the deformation takes place already at pressures lower than those of the standard settings normally adopted by the normal pressure control valves (+500 mmH20) .
- the subsequent flow of material and air, with regard to the ratio of such a flow, will clean completely the duct thereby preventing the obstruction of the same. All this to guarantee the safety of operation and function of the valve itself, with a remarkable increase in the safety of people and the plant.
- one of the preferred embodiments of the present invention is based on the use of a curved discharge duct having a thickness ranging from 3 mm and 12 mm.
- the pressure relief valve according to the present invention besides being cheap and preventing polluting air from being discharged into the atmosphere, can work for a long time without needing maintenance and/or cleaning of its components as a consequence of wear.
- a pressure relief valve for containers suited for the pneumatic loading of loose solid products as claimed in Claim 1 or in any of the Claims depending directly or indirectly on Claim 1.
- FIG. 1 shows a first configuration of the pressure relief valve according to the present invention
- figure 2 shows a second configuration of the pressure relief valve according to the present invention.
- FIG. 3 shows a third configuration of the pressure relief valve according to the present invention.
- a pressure relief valve 1 according to the present invention comprises a valve body 2, which pneumatically communicates with the inside of the container 3, for example a silo.
- valve body 2 of the valve 1 is connected to a sleeve 4, which is integral to the container 3, by means of a flange connection 5.
- the upper end of the valve body 2 is provided with peripheral anchoring means 6 of the flow control organ 7, which preferably comprises, in turn, an elastic membrane 8, which is anchored along its external edge to the anchoring means 5.
- the valve body 2 extends upwards, beyond the membrane
- the intermediate chamber 11 is delimited, in turn, by the cap 9 and by the membrane.
- the transverse wall 10 is provided with an opening 12, on which a flow control body 13 rests, on which a calibration mass 14 lies, which comprises at least one calibration ring 15, which is run through by a support stem 16.
- the weight of the calibration mass 12 is determined so as to keep the opening 12 closed, each time the pressure inside the auxiliary chamber 11 is lower than a predetermined value defined by the designer. Therefore, the weight of the calibration mass 14 can be changed by adding or removing calibration rings 15.
- the vertical movement of the support stem 16 is guided by a vertical guide 17, which is supported by a bushing 18, which, in turn, is fitted to the transverse wall 10 by means of known means.
- a bushing 18 On the bushing 18 there are wide openings, which allow the intermediate chamber 11 to be discharged (see below) .
- the assembly consisting of the bushing 18, the flow control body 13, and the calibration mass 14 substantially builds a controlling device 19 for controlling the flow control organ 7, as described below.
- the membrane 8 of the flow control organ 7 is provided, in its lower part, with a flow control mass 21, which projects downwards inside a duct 22 communicating with the outside.
- the duct 22 presents an edge 23, which is closed/opened by the vertical movement of the flow control mass 21.
- the duct 22, which is inserted in a hole 2A obtained in the valve body 2, is fixed to the valve body 2 itself, on one side, by means of a flange 24, and, on the other side, by means of a pair of screws 25, " 26 arranged close to the hole 2A itself.
- the flow control mass 21 is advantageously conical and presents a top, which is directed downwards, so as to help the excess fluid flow outside of the container 3.
- the elastic membrane 8 is provided with a series of through holes, which are distributed in a peripheral manner on an external annular surface of the elastic membrane 8 itself.
- Said holes are suited to establish a fluid communication between the auxiliary chamber 11 and the container 3 through the valve body 2, so that, each time the pressure value in the container 3 changes, there is a certain delay in the change of the pressure value in the auxiliary chamber 11 itself. As a matter of fact, it is advisable for the change in the pressure value not to take place in an immediate manner.
- the surface of the membrane 8 facing the inside of the container 3 is associated to a filtering element (not shown), which also covers the passage holes, so as to prevent powder from coming out of the holes themselves .
- the valve 1 works as follows: - when the pressure inside the container 3 slowly increases, the holes obtained in the peripheral portion of the membrane 8 allow the pressure in the auxiliary chamber 11 to simultaneously increase, thus exerting a progressive and increasing thrust on the flow control body 13, until it is rapidly lifted upwards, so that the excess gas can be discharged outside; this causes a sharp decrease of the pressure in the auxiliary chamber 11 and produces an unbalance on the membrane 8, which, due to the lower pressure that acts on its upper side, moves upwards, thus establishing a reciprocal communication, as indicated by the arrows (Fl) of figure 3, between the valve body 2 and the duct 22, which leads to the discharge of the excess fluid quantity present in the container 3 ;
- the duct 22 is advantageously made of a flexible material, for example an elastomer, in particular a polymer that is suited to be elastically deformed.
- the discharge duct 22 is preferably curved and it preferably presents a thickness ranging from 3 mm to 12 mm.
- the thickness of said duct 22 can be different from area to area, so as to create areas that are thinner and more deformable with respect to thicker and less deformable areas.
- preferential areas are advantageously created, in which deeper recesses are formed; said preferential areas alternate with other areas (having a larger thickness) , in which less deep recesses are formed.
- the same effect can be obtained, in a further embodiment that is not shown, by providing a discharge duct consisting of at least two elastomers having a different modulus of elasticity, so as to guide and control the deformation of the duct 22 and the relative vibrations induced on it.
- the discharge duct can be made of a composite material having some sectors of elastomer and others of metal.
- the duct can also be made of an elastomer with at least an insert of a different material inside said elastomer.
- Another embodiment is represented by a discharge duct manufactured with a corrugated pipe made of metal/elastomer; or hard plastic/elastomer.
- the pressure relief valve according to the present invention besides being cheap and preventing polluting air from being discharged into the atmosphere, can work for a long time without needing maintenance and/or cleaning of its components as a consequence of wear.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014012406A BR112014012406A2 (pt) | 2011-11-23 | 2012-11-23 | válvula de alívio de pressão para recipientes adequados para o carregamento pneumático de produtos sólidos a granel, em particular silos |
CN201280067686.5A CN104066665B (zh) | 2011-11-23 | 2012-11-23 | 用于适于气动加载松散固体产品的容器特别是筒仓的减压阀 |
EP12820899.8A EP2782856B1 (fr) | 2011-11-23 | 2012-11-23 | Soupape de surpression pour contenants adaptés à un chargement pneumatique de produits solides lâches, en particulier des silos |
RU2014125255A RU2638329C2 (ru) | 2011-11-23 | 2012-11-23 | Клапан сброса давления для контейнеров, приспособленных для пневматической загрузки сыпучих твердых продуктов, в частности бункеров для хранения |
US14/359,326 US9528619B2 (en) | 2011-11-23 | 2012-11-23 | Pressure relief valve for containers suited for the pneumatic loading of loose solid products, in particular silos |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000668A ITBO20110668A1 (it) | 2011-11-23 | 2011-11-23 | Valvola limitatrice di pressione per contenitori adatti al caricamento pneumatico di prodotti solidi sfusi, in particolare sili |
ITBO2011A000668 | 2011-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013076704A1 true WO2013076704A1 (fr) | 2013-05-30 |
Family
ID=45464673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2012/056690 WO2013076704A1 (fr) | 2011-11-23 | 2012-11-23 | Soupape de surpression pour contenants adaptés à un chargement pneumatique de produits solides lâches, en particulier des silos |
Country Status (7)
Country | Link |
---|---|
US (1) | US9528619B2 (fr) |
EP (1) | EP2782856B1 (fr) |
CN (2) | CN104066665B (fr) |
BR (1) | BR112014012406A2 (fr) |
IT (1) | ITBO20110668A1 (fr) |
RU (1) | RU2638329C2 (fr) |
WO (1) | WO2013076704A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2904783C (fr) * | 2014-11-04 | 2020-07-14 | Cnh Industrial Canada, Ltd. | Regulateur de pression de reservoir pour chariots a air |
CN116951142B (zh) * | 2023-09-19 | 2023-12-12 | 成都市和谐环保工程技术有限公司 | 一种沉淀池进气管用泄气阀及其泄气方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB809536A (en) * | 1955-05-12 | 1959-02-25 | Sperryn And Company Ltd | Improvements in or relating to gas shut-off valves |
GB1140376A (en) * | 1966-06-14 | 1969-01-15 | Metalair Ltd | Improvements in storage containers for particulate material |
DE6926613U (de) * | 1969-07-03 | 1969-10-16 | Vorwerk & Co Elektrowerke Kg | Schlauch, insbesondere fuer staubsauger. |
DE2421725A1 (de) * | 1974-05-04 | 1975-11-20 | Zimmermann Azo Maschf | Schlauchleitung fuer pneumatische foerderanlagen |
GB1474338A (en) * | 1975-05-23 | 1977-05-25 | V P Izyskatel I Nii Gidtoproek | Pneumatic conveying installation for finely divided materials |
EP0252338A1 (fr) * | 1986-06-23 | 1988-01-13 | INDUSTRIE PLASTICHE LOMBARDE S.r.l. | Conduit de tuyaux hélicoide à déchargement de charges électrostatiques à la terre |
CA2428936A1 (fr) * | 2003-05-20 | 2004-02-10 | Falconbridge Limited | Bras flexible autoporteur de chargement de navire pour le transfert pneumatique de solides |
WO2005089879A1 (fr) * | 2004-03-18 | 2005-09-29 | Johns Manville | Procede permettant d'acheminer des particules au moyen d'un tuyau presentant une variation reduite du diametre interne |
FR2894235A1 (fr) * | 2005-12-06 | 2007-06-08 | Jacques Joseph Charles Renard | Dispositif pour la tuyauterie d'aspiration telescopique orientable du transbordeur de cereales en vrac. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1059370A (en) * | 1912-05-13 | 1913-04-22 | John N Johnson | Means for relieving the walls of receptacles from undue internal pressure. |
US2723678A (en) * | 1950-06-05 | 1955-11-15 | Wilson J Pearl | Valves |
SU539814A1 (ru) * | 1974-06-18 | 1976-12-25 | Всесоюзный Ордена Ленина Проектно-Изыскательский И Научно-Исследовательский Институт "Гидропроект" Им.С.Я.Жука | Всасывающе-нагнетательна установка дл пневмотранспорта сыпучих материалов |
US3953077A (en) * | 1975-05-14 | 1976-04-27 | Valery Anatolievich Kulyabko | Vacuum-and-pressure pneumatic conveying installation for pulverized materials |
DE2716640A1 (de) * | 1977-04-15 | 1978-10-19 | Stanelle Karl Heinz | Beladevorrichtung fuer rieselfaehiges schuettgut |
SU1063745A2 (ru) * | 1982-08-23 | 1983-12-30 | Всесоюзный научно-исследовательский институт горноспасательного дела | Устройство дл пневматической транспортировки сыпучих материалов из замкнутой емкости |
ES2203429T3 (es) * | 1999-02-23 | 2004-04-16 | Bernd Federhen | Dispositivo y procedimiento para introducir material a granel en un conducto de transporte neumatico. |
JP5164281B2 (ja) * | 2010-04-27 | 2013-03-21 | 日本サーモスタット株式会社 | 流体制御弁装置 |
-
2011
- 2011-11-23 IT IT000668A patent/ITBO20110668A1/it unknown
-
2012
- 2012-11-23 EP EP12820899.8A patent/EP2782856B1/fr active Active
- 2012-11-23 BR BR112014012406A patent/BR112014012406A2/pt active Search and Examination
- 2012-11-23 WO PCT/IB2012/056690 patent/WO2013076704A1/fr active Application Filing
- 2012-11-23 CN CN201280067686.5A patent/CN104066665B/zh active Active
- 2012-11-23 US US14/359,326 patent/US9528619B2/en active Active
- 2012-11-23 CN CN2012206294221U patent/CN203199674U/zh not_active Expired - Fee Related
- 2012-11-23 RU RU2014125255A patent/RU2638329C2/ru active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB809536A (en) * | 1955-05-12 | 1959-02-25 | Sperryn And Company Ltd | Improvements in or relating to gas shut-off valves |
GB1140376A (en) * | 1966-06-14 | 1969-01-15 | Metalair Ltd | Improvements in storage containers for particulate material |
DE6926613U (de) * | 1969-07-03 | 1969-10-16 | Vorwerk & Co Elektrowerke Kg | Schlauch, insbesondere fuer staubsauger. |
DE2421725A1 (de) * | 1974-05-04 | 1975-11-20 | Zimmermann Azo Maschf | Schlauchleitung fuer pneumatische foerderanlagen |
GB1474338A (en) * | 1975-05-23 | 1977-05-25 | V P Izyskatel I Nii Gidtoproek | Pneumatic conveying installation for finely divided materials |
EP0252338A1 (fr) * | 1986-06-23 | 1988-01-13 | INDUSTRIE PLASTICHE LOMBARDE S.r.l. | Conduit de tuyaux hélicoide à déchargement de charges électrostatiques à la terre |
CA2428936A1 (fr) * | 2003-05-20 | 2004-02-10 | Falconbridge Limited | Bras flexible autoporteur de chargement de navire pour le transfert pneumatique de solides |
WO2005089879A1 (fr) * | 2004-03-18 | 2005-09-29 | Johns Manville | Procede permettant d'acheminer des particules au moyen d'un tuyau presentant une variation reduite du diametre interne |
FR2894235A1 (fr) * | 2005-12-06 | 2007-06-08 | Jacques Joseph Charles Renard | Dispositif pour la tuyauterie d'aspiration telescopique orientable du transbordeur de cereales en vrac. |
Also Published As
Publication number | Publication date |
---|---|
EP2782856A1 (fr) | 2014-10-01 |
US20140326347A1 (en) | 2014-11-06 |
ITBO20110668A1 (it) | 2013-05-24 |
EP2782856B1 (fr) | 2017-07-05 |
BR112014012406A2 (pt) | 2017-06-06 |
CN104066665B (zh) | 2017-05-31 |
CN104066665A (zh) | 2014-09-24 |
US9528619B2 (en) | 2016-12-27 |
RU2014125255A (ru) | 2015-12-27 |
RU2638329C2 (ru) | 2017-12-13 |
CN203199674U (zh) | 2013-09-18 |
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